Zoom Control Apparatus Object Displacement Framing Assist
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Solution Overview
Problem
Inexperienced users face difficulties in capturing objects with high zoom magnification image capturing apparatuses, as existing framing assist zoom functions struggle to accurately determine when to perform zoom out based on the displacement of the object image in the captured image, leading to potential loss of the object or inappropriate zoom control.
Innovation Solution
A zoom control apparatus that acquires the motion amount of the image capturing optical system, calculates the displacement amount of the main object image, and determines whether it exceeds a threshold to control the angle of view, allowing for automatic zoom out or zoom in based on user intention, specifically activating the framing assist zoom function during electronic zoom to prevent object loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If high zoom magnification is used to capture distant objects, then the ability to capture distant objects is improved, but the difficulty of framing and maintaining the object in frame increases
Solution Approach 1:
The system continuously monitors camera motion through motion detection and calculates object displacement in real-time. When displacement exceeds a threshold, the system automatically adjusts the zoom magnification by performing electronic zoom out, thereby maintaining the object within the frame. This closed-loop feedback mechanism resolves the contradiction by dynamically adapting the zoom level based on actual framing conditions.
Solution Approach 2:
The framing assist zoom function operates autonomously without requiring manual user intervention. The system self-monitors framing conditions through object displacement calculation and self-corrects by automatically adjusting zoom magnification when the object approaches the frame boundary, enabling inexperienced users to capture distant objects effectively.
2Reliability
If automatic zoom out is performed in response to camera motion, then the object is maintained in frame, but the precision of determining when to zoom out deteriorates
Solution Approach 1:
The system pre-calculates the relationship between camera motion amount and object displacement using stored correspondence data before actual framing is needed. This preliminary calculation allows the system to accurately predict object position changes and determine the precise moment when zoom adjustment should be triggered, improving both reliability and measurement precision.
Solution Approach 2:
The system introduces an intermediary calculation step that converts camera motion data into object displacement estimates using pre-established correspondence relationships. This intermediary process bridges the gap between raw motion detection and accurate displacement measurement, enabling more precise determination of when to trigger zoom adjustments.
3Adaptability or versatility
If zoom control is activated during electronic zoom, then framing assist is provided, but the complexity of zoom control increases
Solution Approach 1:
The framing assist zoom function is selectively activated only during electronic zoom operations, not during all zoom modes. This partial activation approach provides necessary framing assistance when most needed (during electronic zoom where object loss is more likely) while avoiding unnecessary complexity in other zoom scenarios, achieving a balance between adaptability and system simplicity.
Data Source
AI summary
The zoom control apparatus configured to control an angle of view. The apparatus includes a motion acquirer configured to acquire a motion amount of an image capturing optical system, a calculator configured to calculate a displacement amount of a main object image in a captured image by using the motion amount of the image capturing optical system, a determiner configured to determine whether or not the displacement amount of the main object image is larger than a first threshold, and a controller configured to perform, when the displacement amount of the main object image is larger than the first threshold, control for making the angle of view wider than that for when the displacement amount of the main object image is smaller than the first threshold.